device.h: audit and cleanup users in main include dir

The <linux/device.h> header includes a lot of stuff, and
it in turn gets a lot of use just for the basic "struct device"
which appears so often.

Clean up the users as follows:

1) For those headers only needing "struct device" as a pointer
in fcn args, replace the include with exactly that.

2) For headers not really using anything from device.h, simply
delete the include altogether.

3) For headers relying on getting device.h implicitly before
being included themselves, now explicitly include device.h

4) For files in which doing #1 or #2 uncovers an implicit
dependency on some other header, fix by explicitly adding
the required header(s).

Any C files that were implicitly relying on device.h to be
present have already been dealt with in advance.

Total removals from #1 and #2: 51.  Total additions coming
from #3: 9.  Total other implicit dependencies from #4: 7.

As of 3.3-rc1, there were 110, so a net removal of 42 gives
about a 38% reduction in device.h presence in include/*

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 1f6587590a1a..e3cdc3aec87e 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -14,11 +14,12 @@
 #ifndef _LINUX_CPU_H_
 #define _LINUX_CPU_H_
 
-#include <linux/device.h>
 #include <linux/node.h>
 #include <linux/compiler.h>
 #include <linux/cpumask.h>
 
+struct device;
+
 struct cpu {
 	int node_id;		/* The node which contains the CPU */
 	int hotpluggable;	/* creates sysfs control file if hotpluggable */